What happens when the permafrost thaws? | BBC Ideas

Around 11% of the Earth's land mass is covered by permafrost. But its threatened by climate change. What is permafrost - and what happens when it thaws? Video by Daniel Nils Roberts. Made in partnership with @royalsociety Subscribe to BBC Ideas 👉 https://bbc.in/2F6ipav ____________________________ Do you have a curious mind? You’re in the right place. Our aim on BBC Ideas is to feed your curiosity, to open your mind to new perspectives, and to leave you that little bit smarter. So dive in. Let us know what you think. And make sure to subscribe! 👉https://bbc.in/2F6ipav Visit our website to see all of our videos: https://www.bbc.com/ideas And follow BBC Ideas on Twitter: https://twitter.com/bbcideas #Permafrost #ClimateChange #BBCIdeas #greenland